Then, you will not be able to drive your vehicle unless you take the necessary action to resolve the issue. The code represents the higher pressure of the exhaust system back pressure circuit than its normal range.Ī linear analog voltage signal can be produced from the exhaust back pressure sensor to define pressure. The PCM can set the code p0471 with the engine of your Cummins vehicle. So, without wasting any time, let’s start to learn. This article will inform you of the responsible reasons, common symptoms, resolving process, fixing cost, and other related information about the code p0471. The code p0471 on Cummins engine means the performance of exhaust system back pressure sensor is out of normal range.In this case, the powertrain control module (PCM) can detect an abnormal range of voltage readings from the exhaust pressure sensor circuit. Now, the question is, what does the code means? So, if you are a Cummins automotive owner, you may notice the code p0471. A diagnostic trouble code (DTC) help a Cummins vehicle owner determine the exact issue his vehicle is facing.